Patents by Inventor Ruth Oppermann

Ruth Oppermann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microfiche reader
    Patent number: 4220404
    Abstract: A film screen is perpendicularly slidably mounted on a first guide rail in a microfiche reader. This first guide rail is detachably mounted on a frame which in turn is slidably mounted on a second guide rail perpendicularly with respect to said first guide rail so that the two guide rails form a coordinate support arrangement for selectively displacing the film screen in two mutually perpendicular directions. The second guide rail is mounted on the base of the microfiche reader. The film screen and first guide rail can be easily detached from the frame and replaced by a film screen and first guide rail of different size which is then attached to the frame.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: September 2, 1980
    Assignee: AGFA-Gevaert A.G.
    Inventors: Wilfried Hofmann, Gunther Luder, Ruth Oppermann, Adolf H. Moll